Registration Dossier
Registration Dossier
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EC number: 223-242-0 | CAS number: 3779-63-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
Within 28 days, a degradation of 1 % was determined for HDI Trimer in a 'Closed Bottle Test'. HDI trimer is regarded as "not readily biodegradable".
In a 'Modified Manometric Respirometry Test' with adapted inoculum no degradation of HDI Trimer ) could be obtained within 28 days.
In a biodegradation test with adapted industrial bacteria it was shown that the substance is not degradable. This result is used for assessing the behaviour of the substance in STPs.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
Beside valid tests, there is a study according to a modified MITI-I where the substance was determined to be not readily biodegradable. This study is not regarded as reliable: within 28 days only 48 % degradation of the reference substance (aniline) was observed.
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